HP Surestore 80fx Optical Drive and Library SCSI-2 Command Reference - Page 67

NOTE SCSI-2 Drive Command Set Inquiry Command (12H) If the drive is properly connected and responds to SCSI selection, the Peripheral Qualifier field is set to 000. If Direct Access Inquiry Response (DAIR) has been enabled, the Peripheral Device Type field is set 00H, (Direct Access Device). Otherwise, the Peripheral Device Type field is set to 07H (Optical Memory Device). Because the drive does not support logical unit 1 through 7, an Inquiry command to these logical units always returns 011 for the Peripheral Qualifier and 1FH (Unknown Device Type) for the Peripheral Device Type. RMB The Removable Media Bit is set to 1 for removable optical disks. The drive only supports removable optical disks, so this bit is always 1. Device Type Modifier The drive is not using the Device Type Modifier field and will return 0. ISO, ECMA and ANSI-Approved Versions Approved Version fields indicate compliance of the current firmware to these standards. Additional Sense Length This field indicates the length in bytes of the additional parameters. This field is always 33H. RelAdr The Relative Addressing bit is set to 1, which indicates that the drive supports relative addressing mode. WBus32 The Wide Bus 32 bit of 0 indicates that the drive supports only 8-bit wide data transfers. WBus16 The Wide Bus 16 bit of 0 indicates that the drive supports only 8-bit wide data transfers. Sync The Synchronous transfer bit of 1 indicates that the drive supports synchronous data transfer. Linked The Linked command bit of 1 indicates that the drive supports linked commands. CmdQue The Command queuing bit of 1 indicates that the drive supports tagged command queuing. SftRe The Soft Reset bit of 0 indicates that the drive responds to the RESET condition with the hard RESET. 2-30 Chapter 2